Improvement in lathes



4Toalljwhoia it may concern'.- 'Be' it known that I, FRANCIVSB.MAT'.rsoN,`of ltocklinois, havednvented anew :and useful Improvementmarked thereon.

its construction and operation.

rA, in` which rests the uprightstandard C. i

` socket, anda-secured in auydesi'red position by means This shaft isenabled'to ymove freely through the FRANCIS B. MATTsoN,

Letters'Patent No. 104,751, dated June 28,1870. Y

IMPROVEMENT :NLM-ans.

Y The Schedule referred to in these Letters Patent land mala-.ing partof the same.

ford, in the county of Winnebago and State of Il-- in Back-Rest forTurning-Lathes; and I do hereby declarethat the following vis a full andexact description of the saine, reference being had to the accom panyingdrawing, and to the letters of reference This invention has for itsobject the production. of. an adjustable `rest for lathes, which shallbe capable of supporting the work without undue fuction, and withoutinjuring its surface, and to that end It consists principally in theemployment of adjustablerollersupon a sliding shaft, in combination witha vertically-adjustable standard. The details of con# struction and'manner of operation will bei fullydescribed hereinafter;`

.Inthe drawingi Figure 1 represents a side elevation of lny improvedrest; y

Figure 2, a sectional view; and

Figure v3, a plan view of the base.

To enable others skilled in the' art to make and use my invention, Iwill now proceed to fully `describe A represents a"slotted base, Whichrests upon the lathe, and is secured theretoQin the usual manner;-

B represents a socket, rigidly secured to the, base A 'lhis standard may"be moved vertically in the otmthe set-screw b, upon the top of thestandard C, -and at right angles to itis rigidly secured a socket, D,\inwhich is held the shaft E.

socket, and issecured in any Adesired position by the y thumb-screw d. 1the front end `of the shaft E is attached the wings F, between which, ateach eud,are!secured the rollers G G, as shown. i 1" ff representadditional `orifices for the bearings of the rollers,so that they may beadjusted nearer together or further apart, at will.

' AIhe'rear endof the shaft is attached to the lever H by means lof' apin, which moves in a slotin theA lever, as shown in g. 1. .v

The lower end ofthis leveris rigidlysecured to the arm h, extending from-the socket B. Its upper end is provided with a suitable handle.

I represents a spring, located uponthe shaft E, he- .tweenthelever H andthe socket D.

The operation is as follows: v

The tool itself' is adjusted upon the lathe, in any desired position,`bymeans of its slotted base, it being so located however, as to bring therollers in rear. of the objectto be turned, usually at about its center.A 'space Von the stick, sufficient for the roller to j pass against,should Vloe .previously rounded ot. Therollers, having first beenadjusted properly, relatively' to each other, should now be broughtiutovcontact with the stick by operating the lever, and be secured linplace by mea-ns of the thumb-screw'. The position of the rollers,vertically, should be adjusted by movingthe standard G in its socket. pThe rest, when accurately placed in position, will furnish a lrm andsteady support to the stick to be turned, with but little if anyfriction, as the rollers revolve freely as the stick revolves, and also,without mai-ring at all the surface of' the work. It is simple inconstruction and efticient in operation. Having thus fully described myinvention, What I clainras new, and desire tosecure by Letters Patentjs`A1,. The arrangement of ..the rollers GG, shaft E,

and= standard C, when :constructed as shcwn and described, and forthe'purpose specified.'

2. A back-rest for turning-'lathes composed of the slotted base-A,socket B, standard C, socket D, shaft E, wings' FF, adjustable rollers GG, lever H; and spring I, when combined, arranged, and operating asdescribed, for the purpose set forth.

4This specification signed and witnessed this 2d day -ofv September,1869.

FRANCIS B.l MATTSON. 'itnesses:

G. W. FORD, E. A. NICHOLS.

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